Gambit meshing errors

I am quite new to using Gambit and I having problems with mesh generation for my helical tube. I split the entire volume into 4 smaller volumes. Now, when I try to mesh each one of them errors start to crop up. These are the errors associated with the meshing of each volume

1. independent loops of swept faces on volume 2 had mismatched intervals
2. natural source face for projecting volume 3 could not be found
3. the intervals would force the mesh to cross itself could not be meshed using cooper scheme
4. check the interval assignments for correctness volume 7

One of the volumes[shows 'meshing face 4' and it never ends] take very long to mesh and the process eventually terminates saying not enough memory.